Suzuki Wagon R Manual page 930

DTC B3043 W-LINE CKT MALF (SHORT TO BATTERY)
WIRING CIRCUIT
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
W-line circuit voltage is high.
TROUBLE SHOOTING (DTC B3043)
STEP
1 1) Ignition switch at OFF position.
2) Disconnect connector from ECM.
3) Check for proper connection to ECM at E22-3
terminal.
Is it in good condition?
2 1) Connect connector to ECM.
2) Measure voltage between G19-7 terminal of
immobilizer control module and body ground
with ignition switch at OFF position and scan
tool disconnected.
Is it 0 – 1 V?
Fig. for step 2
ACTION
IMMOBILIZER CONTROL SYSTEM 8G-15
TROUBLE AREA
W-line circuit is shorted to power supply circuit.
YES
Go to step 2.
Substitute a known-
good ECM according to
PROCEDURE FOR
ECM REPLACEMENT
and recheck.
1. ECM
2. Immobilizer control module
NO
Repair or replace.
W-line is shorted to
power supply circuit.
Repair and recheck.